Unscrewing bolt structure for radius of wheel of bicycle, has head forming part arranged at end of intermediate part, threaded part that is arranged at end opposite to intermediate part, and damping part that surrounds threaded part

摘要

The structure has a bolt forming assembly (1) including a head forming part (12) arranged at an end of an intermediate part (11). A threaded part (13) is arranged at an end opposite to the intermediate part. A damping part surrounds the threaded part, where the damping part is located adjacent to an end of the bolt forming assembly. The damping part has an exterior diameter that is lower than that of the threaded part of the bolt forming assembly.